TOPEKA, Kansas (AP) – Kansas legislators ended a special session without debating proposed changes in a law requiring new voters to provide proof of U.S. citizenship when they register.

Democratic Sen. Oletha Faust-Goudeau tried Wednesday to add language to a bill on criminal sentencing that would have let new voters sign a sworn statement attesting that they’re U.S. citizens.

The Republican-controlled Senate ruled the proposal out of order.

Another Wichita Democrat, House member Jim Ward, had the same result with a similar amendment Tuesday in his chamber.

The registration law took effect in January and is designed to prevent non-citizens from voting. But the registrations of more than 15,000 legal Kansas residents are on hold because they have yet to provide proper documentation of citizenship, such as a passport or birth certificate.